package com.atguigu.gulimall.product.service.impl;

import com.alibaba.nacos.client.utils.StringUtils;
import com.atguigu.gulimall.product.entity.SkuImagesEntity;
import com.atguigu.gulimall.product.entity.SpuInfoDescEntity;
import com.atguigu.gulimall.product.service.*;
import com.atguigu.gulimall.product.vo.Attr;
import com.atguigu.gulimall.product.vo.SkuItemSaleAttrVo;
import com.atguigu.gulimall.product.vo.SkuItemVo;
import com.atguigu.gulimall.product.vo.SpuItemAttrGroupVo;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.List;
import java.util.Map;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.ExecutionException;
import java.util.concurrent.ThreadPoolExecutor;

import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.core.metadata.IPage;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.atguigu.common.utils.PageUtils;
import com.atguigu.common.utils.Query;

import com.atguigu.gulimall.product.dao.SkuInfoDao;
import com.atguigu.gulimall.product.entity.SkuInfoEntity;

import javax.annotation.Resource;




@Service("skuInfoService")
public class SkuInfoServiceImpl extends ServiceImpl<SkuInfoDao, SkuInfoEntity> implements SkuInfoService {

    @Resource
    private SkuInfoDao skuInfoDao;

    @Resource
    private AttrService attrService;

    @Resource
    private AttrGroupService attrGroupService;

    @Resource
    private SpuInfoDescService spuInfoDescService;

    @Resource
    private SkuImagesService skuImagesService;

    @Resource
    private SkuSaleAttrValueService skuSaleAttrValueService;

    @Resource
    private ThreadPoolExecutor executor;

    @Override
    public PageUtils queryPage(Map<String, Object> params) {
        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                new QueryWrapper<SkuInfoEntity>()
        );

        return new PageUtils(page);
    }


    /**
     * 保存sku信息****
     * @param skuInfoEntity
     */
    @Override
    public void saveSkuInfo(SkuInfoEntity skuInfoEntity) {
        this.save(skuInfoEntity);
    }

    /**
     * 根据条件查询sku信息分页
     */
    @Override
    public PageUtils queryPageByCondition(Map<String, Object> params) {
        QueryWrapper<SkuInfoEntity> queryWrapper = new QueryWrapper<>();
        /**
         * key:
         * catelogId: 0
         * brandId: 0
         * min: 0
         * max: 0
         */
        String key = (String) params.get("key");
        if(!StringUtils.isEmpty(key)){
            queryWrapper.and((wrapper)->{
                wrapper.eq("sku_id",key).or().like("sku_name",key);
            });
        }

        String catelogId = (String) params.get("catelogId");
        if(!StringUtils.isEmpty(catelogId)&&!"0".equalsIgnoreCase(catelogId)){

            queryWrapper.eq("catalog_id",catelogId);
        }

        String brandId = (String) params.get("brandId");
        if(!StringUtils.isEmpty(brandId)&&!"0".equalsIgnoreCase(catelogId)){
            queryWrapper.eq("brand_id",brandId);
        }

        String min = (String) params.get("min");
        if(!StringUtils.isEmpty(min)){
            queryWrapper.ge("price",min);
        }

        String max = (String) params.get("max");
        if(!StringUtils.isEmpty(min)) {
            try {
                BigDecimal bigDecimal = new BigDecimal(max);
                if (bigDecimal.compareTo(new BigDecimal("0")) == 1) {
                    queryWrapper.le("price", max);
                }
                }catch(Exception e){

            }
        }

        IPage<SkuInfoEntity> page = this.page(
                new Query<SkuInfoEntity>().getPage(params),
                queryWrapper
        );

        return new PageUtils(page);
    }

    /**
     * 根据spuId查询sku信息列表*****
     * @param spuId
     * @return
     */
    @Override
    public List<SkuInfoEntity> getSkusBySpuId(Long spuId) {
        List<SkuInfoEntity> skuInfoEntityList = skuInfoDao
                .selectList(new QueryWrapper<SkuInfoEntity>().eq("spu_id", spuId));
        return skuInfoEntityList;
    }

    /**
     * 根据skuId查询商品详情信息***
     * @param skuId
     * @return
     */
    @Override
    public SkuItemVo item(Long skuId) throws ExecutionException, InterruptedException {
        SkuItemVo skuItemVo = new SkuItemVo();
        CompletableFuture<SkuInfoEntity> infoFuture = CompletableFuture.supplyAsync(() -> {
            //1、获取sku的基本信息，数据来自于pms_sku_info表
            SkuInfoEntity skuInfoEntity = this.baseMapper.selectOne(new QueryWrapper<SkuInfoEntity>().eq("sku_id", skuId));
            skuItemVo.setSkuInfo(skuInfoEntity);
            return skuInfoEntity;
        }, executor);

        CompletableFuture<Void> descFuture = infoFuture.thenAcceptAsync((res) -> {
            //3、spu的介绍，数据来源于pms_spu_info_desc表
            Long spuId = res.getSpuId();
            SpuInfoDescEntity descEntity = spuInfoDescService.getById(spuId);
            skuItemVo.setDesc(descEntity);
        }, executor);

        CompletableFuture<Void> groupAttrFuture = infoFuture.thenAcceptAsync((res) -> {
            //4、spu的规格参数
            Long catalogId = res.getCatalogId();
            List<SpuItemAttrGroupVo> attrGroupVos = attrGroupService.getAttrGroupWithAttrsBySpuIdAndCatalogId(res.getSpuId(), catalogId);
            skuItemVo.setGroupAttrs(attrGroupVos);
        }, executor);

        CompletableFuture<Void> saleFuture = infoFuture.thenAcceptAsync((res) -> {
            //5、获取spu的销售属性组合
            List<SkuItemSaleAttrVo> saleAttrVos = skuSaleAttrValueService.getSaleAttrBySpuId(res.getSpuId());
            skuItemVo.setSaleAttr(saleAttrVos);
        }, executor);

        CompletableFuture<Void> imgFuture = CompletableFuture.runAsync(() -> {
            //2、sku的图片信息，数据来自于 pms_sku_images表
            List<SkuImagesEntity> imagesList = skuImagesService.list(new QueryWrapper<SkuImagesEntity>().eq("sku_id", skuId));
            skuItemVo.setImages(imagesList);
        }, executor);

        // 等待所有任务完成返回结果
        CompletableFuture.allOf(descFuture, groupAttrFuture, saleFuture, imgFuture).get();

        return skuItemVo;
    }

}